<div style="background: rgba(20, 206, 165, 0.637);">
        <!-- <h3>{{name}}</h3> -->
        <li *ngFor = "let list of parentData">父组件数据：编号:{{list.id}}--姓名:{{list.name}}--标题：{{list.title}}</li>
        <h2 (click)="vote()" >4:给父组件传递数据</h2>
        <h2>@ViewChild测试</h2>
</div>
